Planooraph co



M. J. MOREHOUSE.

VENTILATOR.

APPLICATION FILED Auq.24. 19]8.

1,309,867, Patented July 15, 1919.

3 SHEETSSHEET I- Inventor.

rrazzf/ fom/iwe THE COLUMBIA PLANOGRAPH 50.. WASHINc'wN, n. C.

M. 1. MOREHOUSE-.

VENHLATOH.

APPLICATION FILED AUG-24' IQIB.

1,309,867. Patented July 15, 1919.

3 SHEETS-SHEET 2- I THE COLUMBIA PLANOGRAPH cm. WAsl-uNdToN, b. c.

M. L'MOREHOUSE.

VENTILATOR.

APPLICATION FILED AUG.24, 1913.

1,309,867.: Patented July 15, 1919.

a SHEETS-SHEET 3.

THE COLUMBIA PLANOQRAPH cO-. WASHINGTON. D. c.

urn STATES MERRITT J. MOREHOUSE, OF EVANSTON, ILLINOIS.

' VENTILATOR.

v Specification of Letters Patent.

Patented July 15, 1919.

Application filed August 24, 1918. SerialNo. 251,315.

quantities of vapor which require to be carried oif. In paper millsthere is an excessive development of water vapor which, unless rapidlydischarged from the building,

seriously interferes with the successful operation of the plant andcauses the rapid deterioration of the building itself.

The object of this invention is to provide for the rapid discharge ofvapors, the action being stimulated by the movement of outside aircurrents.

One embodiment of the invention is hereinafter described and isillustrated in the accompanying drawings, in which- Figure 1 is atransverse vertical section through the upper portion of a building;

Fig. 2 is a detail plan view, partly in section, on the line 2-2 of Fig.1;

Fig. 3 is a detail side elevation of the upper portion of the building;

Fig. 1 is a detail section on the line 14: of Fig. 3; and

Fig. 5 is a detail section on the line 5-5 of Fig. 4:.

The side walls of the building are shown at 10, 11, and its roof at 12.Centrally superposed upon the roof 12 is a monitor, generally designatedby the numeral 13, this structure, in the building illustrated,extending through its entire length. The monitor is provided with tworoofs 14, 15, spaced apart a considerable distance. side walls 16 of themonitor terminate at the lower roof 15, and are here shown as entirelyof glazing and as without openings. The space between the two roofs isentirely open, except for the necessary framing, thereby providing forthe free passage of air currents.

Both roofs slope toward the side walls. The lower roof 15 is providedwith a longitudinal central opening 17 of substantial width. At eachside of this opening for a The short distance the roof has a decidedpitch, as shown'at 18, the outer portions 19 of the roof preferablybeing of less inclination. A pair of doors 20, 21, is provided forclosing the opening 17. These doors are preferably hinged at the innermargins of the roof portions 18, and when closed meet at the center ofthe opening. When open the doors will fold backwardly and rest directlyupon the roof sections 18. Usually the doors will be open, but areprovided for use in extremely cold weather.

The wind may blow freely through the space between the two roofs, and,being defiected upwardly by the more sharply inclined portions 18 of thelower roof, will pass entirely over the opening 17 and will induce adraft through this opening which will rapidly carry out of the buildingthe troublesome vapors incident to the operations being carried ontherein. The velocity of the wind changes the action only in degree. AVery gentle movement of the external air will produce the desiredresult, and the efliciency of the ventilating means is increased withthe velocity of the wind. The upper roof not only protects the opening17 from the weather, but cooperates with the lower roof in directing theair currents across this opening.

While there has been selected, for the purpose of illustrating theinvention, a building of a certain type in which the ventilation isprovided through the medium of a monitor, other types of buildings canbe treated in similar manner, it being immaterial whether the doubleroof construction be limited to only a portion of the width of the roofor extend entirely across it.

Various changes of detail may be made without departing from the scopeof the invention, the important consideration being that a portion ofthe roof leading to the opening be upwardly inclined.

Again it is obvious that the upward defiection of the air currents isrequired only at any given time at the windward side of the opening.While the deflecting portions 18 of the roof are shown as stationary,and this form of construction is believed to'be preferable, it is notessential.

I claim as my invention 1. A ventilator for a building comprising, incombination, a pair of roofs spaced to permit free passage of aircurrents therebetween, the inner roof having an opening, and

means for deflecting such currents from their entering direction towardthe outer roof across the opening in the inner roof.

2. In a ventilator, in combination, an apertured roof, a deflectorupwardly inclined relative to the roof at the side of the roof aperture,and a second roof above the apertured roof, the sides of the structurebeing open to permit the free circulation of air be,- tween the roofs.

3. A ventilator comprising an inner and an outer roof arranged to permitthe free passage of air therebetween, the inner roof being apertured, adeflector outwardly inclined relative to the inner roof surface flankingthe aperture.

4:- A ventilator comprising, in combination, a roof, a monitorsurmounting the roof and having the lower portions of its side wallsclosed and the upper portions thereof open,'a roof covering them0nit01,'and a subroof joining the walls thereof at the upper margins oftheir closed portions, such subroof being inclined upwardly from eachside and having an opening at its median portion, the inner portion ofeach side of the sub-roof having a greater pitch than the outer portionsthereof.

5. In a ventilator, in combination, a pitched roof having an aperture atits apex, and an upper roof spaced from the firstnamed roof and havingits lateral margins in a plane above that of the aperture.

6. A ventilator for buildings comprising a pitched roof having anopening at its apex, and an upper'roof spaced therefrom, the surface ofthe lower roof being free from obstructions to the passage of airthereover within the lateral confines of the upper roof.

7. A ventilator for buildings comprising an apertured roof, an upperroof spaced therefrom, the portions of the lower roof bordering theaperture being upwardly inclined and being free from obstructions to aircurrents within the lateral confines of the upper roof.

In a ventilator, in combination, a pitched roof having an aperture atits apex, the portions of the roof adjacent the aperture being inclinedupwardly relatively to the general roof pitch, and an upper roofcovering the aperture and spaced from the first-named roof and havingits margins at a greater elevation than t at of the margins of theaperture.

9. In a ventilator, in combination, a pitched roof having an aperture atits apex, the portions of the roof adjacent the aperture being inclinedupwardly relatively to the general roof pitch, and an upper pitched roofcoveringthe aperture and spaced from the first-named roof and having itsmargins at a greater elevation than that of the margins of the aperture.

MERRITT J. MOREHOUSE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. G.

